Vt/Ct/Pt (Scaling Coefficient) - UNI-T UTE310 User Manual

User's Manual
2. Pressing the [ ] or [ ] key to select OFF or ON. The screen displays the SCALE when it sets ON.
3. Using the [▲] or [▼] key to select other setting option or pressing the [ESC] key to go back to
the measurement interface.

6.4.2 VT/CT/PT (Scaling coefficient)

Setting Steps
1. Using the [▲] or [▼] key in the SCALE menu to select "VT SCALE","CT SCALE" or "PT SCALE" (the
option is fill with red shading which means it is selected).
2. Pressing the [ ] or [ ] key to select the data bit to be edited.
3. Rotating the encoder knob to increase or decrease the numerical value, the range is 0000.001～
9999.999.
4. Using the [▲] or [▼] key to select other setting option or pressing the [ESC] key to go back to
the measurement interface.
Explanation
1. VT: Voltage Transformer
2. CT: Current Transformer
Application Example 1
Using the ZCS400 AC/DC current transformer of ZLG brand to measure the current of 380A. The ratio
of ZCS400 is 1:2000, and use the voltage transformer with ratio of 1:2 to measure the voltage of 600V.
The instrument's scaling coefficient should be set, CT sets to 2000.000, VT sets to 0002.000 and PT set
to 0001.000. During the measurement, the secondary side of the ZCS400 will be output the scaled
current. Connecting the secondary side of the ZCS400 to the instrument's current input terminals, and
the secondary side of the VT connect to the voltage input terminals, at this time, the instrument displays
the current of 380A, the voltage of 600V and the power of 228kW, while the actual current size of the
input terminal is 380*1/2000=0.19A and the voltage is 300V.
Application Example 2
When the user has used both voltage and current transformer measurements, and needs to view both
the actual value of the output of the secondary side of the voltage transformer and current transformer,
as well as the actual power in the circuit being measured, the need can be met by setting the PT.
Using the ZCS400 AC and DC current transformer of ZLG brand to measure the current of 380A. The ratio
of ZCS400 is 1:2000, and use the ratio of 1:2 voltage transformer to measure the voltage of 600V. At this
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